RENNtech ECU Upgrade E 350 MY 2014+ (W212- 308 HP / 285 LB-FT) porsche-boxster--981---2012-2016--boxster-gts-esr7596289 633 LB-FT @ 5

633 LB-FT @ 5

2020+ X167 GLS 580

Up to 600HP and 854LB-FT

The Hart like a Hammer Capsule is limited edition- once sold out

The R3 performance package includes everything found in package R1 & R2 with the addition of our stainless steel long tube headers for more performance and sound in addition to our transmission performance upgrade

RENNtech ECU Upgrade E 350 MY 2014+ (W212- 308 HP / 285 LB-FT) porsche-boxster--981---2012-2016--boxster-gts-esr7596289 633 LB-FT @ 5RENNtech ECU Upgrade for 212 E 350 FaceLift (2014+). up to 308HP and 273 LB FT. Gains: +6HP & 12 LB FT RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980's! Our experience, countless hours of in house research, development and exhaustive testing ensure that our proprietary ECU upgrade offers incredible performance gains and rock solid daily driver reliability.